Thank you for your reply. I`ll have a look at pymel.
I know about these tuts and examples. The pure python scripting works fine. But my problem is that I get errors when I try to do a GUI with e.g. Tkinter.
import Tkinter as tk
# File "...\Python25\lib\lib-tk\Tkinter.py", line 38, in
# import _tkinter # If this fails your Python may not be configured for Tk
# ImportError: DLL load failed: Das angegebene Modul wurde nicht gefunden. #
How to import and setup these files correctly, so that maya can find these files and execute scripts which import Tkinter for GUI creation.